| abstract |
A process for preparing ketophosphonate compounds of the structure: (**formula**) where A is cycloalkyl of three to ten carbon atoms, 1-adamantyl, 2-norbornyl, 2-(1,2,3,4 -tetrahydronaphthyl), 2-indanyl or substituted 2-indanyl wherein said substituent is halogen, trifluoromethyl, C 1 -C 4 -alkoxy or C 1 -C 4 -alkoxy; n is an integer from 0 to 05; characterized by reacting an alkyl ester (from 1 to 4 carbon atoms). |